Locomotive stoker



C. J. SURDY -LOCOMOTIVE STOKER Filed May 12, 1938 2 Sheets-Sheet 1 XNVENTOR Char/e5 J 'ur'dy Sept. 30,. 1941.

Sept- 30, 1941- cfJ. sURDY 2,257,286

LOCOMOTIVE STOKER Filed May 12, 1938 2 Sheets-Sheet 2 INVENTOR Char/es J Suray Y @Z1/M ATTORNEY5 Patented Sept. 30, 1941 iFFICSE 2,257,286 LGCOMOTIV E STOKER `Charles J. Study,

3 Claims.

This invention relates to locomotive stokers and more particularly to the type which feeds into the Iirebox through/the grate thereof.

ations in the locomotive.

A further object of 'this invention is to provide stoker having a fuel elevating conduit which enters the iirebox through the plane of the grates and between the side and center grate bearer 'bars thereof.

Itis also an objectof thisinvention'to provide a jprotective grate 'for .A still further object of this 'invention is to provide a support for theprotective grate, `said support being `arranged for insertion into the irebox through the firing opening in the backwall thereof.

` These `and other objects, together with their attendant advantages will become apparent as the following description ofthe invention is read in connection with the accompanying drawings, in which- Fig, 1 is a vertical section through adjacent portions of a locomotive and tender, showing vthe invention partly ink vation;

Fig. 2 is a plan View of the Stoker structure shown in Fig. -1 witha portion of the iirebox in section;

Fig. 3 is a sectional View from Within the rebox taken along the line 3-3 of Fig. l; and

Fig. 4 is a perspective View of the supporting member for the fuel elevating conduit protective grate.

On these drawings, L indicates a locomotive having a boiler I mounted above the frame II. The boiler I0 comprises a firebox I2 having a backwall I3 provided with a firing opening I4 above the grates I5 and also above the cab deck of the locomotive L is a tender T connected to the former by the buiier B and including an underframe I1 above which is supported the tank I8. The tank I 8 is provided with a fuel bin I9 above the tender deck 20.

Within the rebox I2 and at its lower portion is` a center grate bearer bar 2I which extends longitudinally of the rebox along its medial plane. Along a side wall 22, 23, the iirebox I 2 carries a side bearer bar 24, respectively. The center and side bearer bars 2|, 24 and 25 are sesection and partly in side `ele-` f face 42 of which Tuckahoe, N. Y., assignor to ThevStandard Stoker Company, a corporation of Delawar `Application May 12, 1938, Serial No.

Incorporated, e

cured to the Aiirebox in known fashion. Grabes I5 are provided with pint-les 26 for engaging suitable recesses 21 in the -bars 2*I, 24 and 25, thus aiiording adequate support for the grates I 5.

Heretofore, stokers of the type which fed upwardly through the re'box grate required that a grate bearer Abar 'be provided with a effect at one Iend through which passed the Stoker conduit. At each side of the wish bone portion of the center grate bearer bar, short Agrate sections were provided. The provision of a new center grategbearer bar is an expense which is charged to the ultimate cost `of a stolzer.

conduit 3| and an intermediate `conveyor conduit 32 which is ilexibly connected at 33 and-"3&1 tothe conduits i321 and 3l, respeotively,bysuitable lbail joints. Fuel V9 drops -intothe-.con'duit i313 andisfconveyed forwardly by a `system of conveyor screws, one of which is shown at ,535 within the fintermediate conveyor conduit i3" The foremost end of the conveyor screw 35`projects into the elbow 36 of the delivery conduit 13.1 "and cooperates therewith to force lfuel upwardly throughfthe vertical conduit 31, the latter forming the 'terminal part o'f the fuel delivery conduit .3II.. A pressure iuidhead '38"is mounted at the upper end of the vertical conduit "3-1 and issues blasts .of 'pressure The vertical conduit 31 enters the rebox I2 through the plane of the grates I5 and extends along one side of the center grate bearer bar 2I and adjacent the backwall I3 of the firebox. As

bar with a. central opening or wish bone accommodating the vertical conduit.

Since the vertical conduit 31 is within the rebox I2, means protecting this part from the extreme heat. prises a lower protective grate upper protective grate section 49,. substantially V-shaped in section and arranged to embrace the vertical conduit 31. The upper grate section 40 rests upon the lower section 39 and carries on its upper side a ring-like member 4I, the upper suris iiush with the upper end of This means coml 2 the vertical conduit 31. Fuel is projected forwardly by the pressure uid head 38.

Preferably, the protective grate sections 39, 49 and the ring-like member 4I are supported upon a part of the locomotive firebox. For this purpose, an H- haped support member 9 (Fig. 4) is provided and it includes a pair of parallel bars 43, 44 and a cross bar 45. At each end of the parallel bars 43, 44 is an outwardly extending pintle 43 and it fits into an appropriate rec-ess 21 of the center bar 2| and side bar 24. The upper surface of the support member 9 is flush with the upper surface of the firebox grates I5 when said support member 9 is in operative position. The cross bar 45, together with the parallel bars 43,

44, defines a pair of indentations 49, 50 and also 1 has formed therein a pair of recesses 5l into which grate supporting pintles are fitted, as will presently appear. In assembling, 9 is introduced into the lirebox l2 through the firing opening I4 by first inserting one end of a parallel bar 43, 44 into said firing opening and then threading this support member through. This has been satisfactorily demonstrated with firing openings of existing form. Usually, when `the support member 9 is inserted into the rebox l2, the vertical conduit 31 is not yet in position and it is thus a very easy matter to place the support member 9 so that each of the four pintles 46 fits into an appropriate recess 21 of the center and side bearer bars 2l and 24. With the support member 9 in position, short grate sections 60 are fitted over the indentation 49.` Each short grate section 60 has a p tle 6l on its outer end for fitting into an appropriate recess 21 and 5I of the side bearer bar 24 and cross bar 45, respectively.

After assembly of the rebox grates, the vertical conduit 31 is inserted through the indentation 50 in operative position overthe elbow 391. The vertical conduit 31 passes freely through the indentation 50 and the space is closed by the lower protective grate section 39, the latter resting upon the center bearer bar 2| and the bars 43, 44 and 45 of the support member 9. Above the lower protective grate section 39, the upper section 49 and ring-like member 4l are placed in proper sequence.

Since the vertical conduit 31 enters the firebox l2 at one side of its longitudinal medial plane, the fuel distributing head 38 is arranged so as to be at one ,side of the conduit 31. The jet opening 92 of said distributor head 38 may the H-shaped support member also be directed in a manner best calculated to spread the fuel evenly over the rebed.

It will be apparent from the foregoing that a stoker of the underfeed type has been provided which feeds through the rebox grate at one side of the longitudinal plane thereof and in this manner obviates the necessity for providing a new center bearer bar of the wish bone type.

I claim:

1. In a rebox, side grate bearer bars and a center grate bearer bar extending straight the full length of said flrebox, grates supported by said bearer bars, a removable support member carried by said center bearer bar and a side bearer bar, a Stoker for feeding fuel into said rebox comprising a fuel delivery conduit passing through said support member, said fuel delivery conduit being disposed between the center bearer bar and a side bearer bar, and grates along one side of said fuel delivery conduit supported by such side bearer bar and said support member.

2. In a rebox, side grate bearerfbars and a center grate bearer bar extending straight the full length of said flrebox, grates supportedby said bearer bars, a removable support member carried by said center bearer bar and a side bearer bar, a stoker for feeding fuel into saidV rebox comprising a fuel delivery, conduit passing through said support member, said fuel delivery conduit being disposed between the center bearer bar and a side bearer bar, grates along one side of said fuel delivery -conduit supported by such side bearer bar and said support member, and a protective grate embracing said fuel delivery COlidu'lt and being mounted upon said support member.

3. In a rebox, side grate bearer bars and a center grate bearer bar extending straight the full length of said rebox, grates supported by said bearer bars, a stoker for feeding fuel .into said flrebox comprising a fuel delivery conduit extending upwardly through the plane of said grates between said center bearer bar and one'of said side bearer bars, a removable support member vdisposed between said conduit and said'last named side bearer bar and adjacent said conduit, said support member being carried by said center bearer bar and said side bearer bar, and grates between said conduit and said last named side bearer bar supported by said side bearer bar and said support member.

CHARLES J. SURDY. 

